88 lines
3.1 KiB
C#
88 lines
3.1 KiB
C#
#region License
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// Copyright (c) 2007 James Newton-King
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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#endregion
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using System;
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using Newtonsoft.Json.Utilities;
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using System.Globalization;
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namespace Newtonsoft.Json.Serialization
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{
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internal class DefaultReferenceResolver : IReferenceResolver
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{
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private int _referenceCount;
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private BidirectionalDictionary<string, object> GetMappings(object context)
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{
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JsonSerializerInternalBase internalSerializer = context as JsonSerializerInternalBase;
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if (internalSerializer == null)
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{
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JsonSerializerProxy proxy = context as JsonSerializerProxy;
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if (proxy != null)
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{
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internalSerializer = proxy.GetInternalSerializer();
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}
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else
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{
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throw new JsonException("The DefaultReferenceResolver can only be used internally.");
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}
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}
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return internalSerializer.DefaultReferenceMappings;
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}
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public object ResolveReference(object context, string reference)
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{
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object value;
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GetMappings(context).TryGetByFirst(reference, out value);
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return value;
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}
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public string GetReference(object context, object value)
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{
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BidirectionalDictionary<string, object> mappings = GetMappings(context);
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string reference;
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if (!mappings.TryGetBySecond(value, out reference))
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{
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_referenceCount++;
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reference = _referenceCount.ToString(CultureInfo.InvariantCulture);
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mappings.Set(reference, value);
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}
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return reference;
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}
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public void AddReference(object context, string reference, object value)
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{
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GetMappings(context).Set(reference, value);
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}
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public bool IsReferenced(object context, object value)
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{
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string reference;
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return GetMappings(context).TryGetBySecond(value, out reference);
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}
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}
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} |